Quanjun Pan
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View article: Ultrafast dynamics of wavelength-sensitive magnons in unconventional compensated semiconducting antiferromagnet
Ultrafast dynamics of wavelength-sensitive magnons in unconventional compensated semiconducting antiferromagnet Open
Antiferromagnet is a promising candidate for the next generation spintronic devices, benefiting from its ultrafast dynamics and spontaneous zero stray field. However, the understanding of their ultrafast spin behaviors is lacking due to th…
View article: A newly developed multi-kilo-channel high-speed and precision waveform digitization system for neutrino experiments
A newly developed multi-kilo-channel high-speed and precision waveform digitization system for neutrino experiments Open
The Jinping Neutrino Experiment(JNE), conducted within the China Jinping Underground Laboratory, aims to detect and analyze of solar neutrinos, geo-neutrinos, and supernova neutrinos. A one-ton prototype will soon be in commision with an u…
View article: Giant Hall Switching by Surface-State-Mediated Spin-Orbit Torque in a Hard Ferromagnetic Topological Insulator
Giant Hall Switching by Surface-State-Mediated Spin-Orbit Torque in a Hard Ferromagnetic Topological Insulator Open
Topological insulators (TI) and magnetic topological insulators (MTI) can apply highly efficient spin-orbit torque (SOT) and manipulate the magnetization with their unique topological surface states with ultra-high efficiency. Here, we dem…
View article: Electric field manipulation of spin chirality and skyrmion dynamic
Electric field manipulation of spin chirality and skyrmion dynamic Open
The Dzyaloshinskii-Moriya interaction (DMI) is an antisymmetric exchange interaction that stabilizes spin chirality. One scientific and technological challenge is understanding and controlling the interaction between spin chirality and ele…
View article: Efficient Spin‐Orbit Torque Switching of Perpendicular Magnetization using Topological Insulators with High Thermal Tolerance
Efficient Spin‐Orbit Torque Switching of Perpendicular Magnetization using Topological Insulators with High Thermal Tolerance Open
Recent advances in using topological insulators (TIs) with ferromagnets (FMs) at room temperature have opened an innovative avenue in spin‐orbit torque (SOT) nonvolatile magnetic memory and low dissipation electronics. However, direct inte…
View article: Field-free approaches for deterministic spin–orbit torque switching of the perpendicular magnet
Field-free approaches for deterministic spin–orbit torque switching of the perpendicular magnet Open
All-electrical driven magnetization switching attracts much attention in next-generation spintronic memory and logic devices, particularly in magnetic random-access memory (MRAM) based on the spin–orbit torque (SOT), i.e. SOT-MRAM, due to …
View article: Electrical and optical characterizations of spin-orbit torque
Electrical and optical characterizations of spin-orbit torque Open
To further reduce the energy consumption in spin–orbit torque devices, it is crucial to precisely quantify the spin–orbit torque (SOT) in different materials and structures. In this work, heavy metal/ferromagnet and heavy metal/ferrimagnet…
View article: Strongly Surface State Carrier‐Dependent Spin–Orbit Torque in Magnetic Topological Insulators
Strongly Surface State Carrier‐Dependent Spin–Orbit Torque in Magnetic Topological Insulators Open
The topological surface states (TSS) in topological insulators (TIs) can exert strong spin–orbit torque (SOT) on adjacent magnetization, offering great potential in implementing energy‐efficient magnetic memory devices. However, there are …
View article: Picosecond spin-orbit torque switching of ferrimagnets
Picosecond spin-orbit torque switching of ferrimagnets Open
Spintronics provides an efficient platform for realizing non-volatile memory and logic devices. In these systems, data is stored in the magnetization of magnetic materials, and magnetization is switched in the writing process. In conventio…
View article: Room-Temperature Spin-Orbit Torque from Topological Surface States
Room-Temperature Spin-Orbit Torque from Topological Surface States Open
Spin-momentum locked surface states in topological insulators (TIs) provide a promising route for achieving high spin-orbit torque (SOT) efficiency beyond the bulk spin-orbit coupling in heavy metals (HMs). However, in previous works, ther…
View article: Spin‐Orbit Torque Switching of a Nearly Compensated Ferrimagnet by Topological Surface States
Spin‐Orbit Torque Switching of a Nearly Compensated Ferrimagnet by Topological Surface States Open
Utilizing spin‐orbit torque (SOT) to switch a magnetic moment provides a promising route for low‐power‐dissipation spintronic devices. Here, the SOT switching of a nearly compensated ferrimagnet Gd x (FeCo) 1− x by the topological insulato…